The types of steel rails are generally classified based on the
weight of each meter of steel rail. A 43kg heavy-duty rail means
that the mass of each meter of rail is 43 kilograms.
According to weight, steel rails are divided into light-duty rails,
heavy-duty rails, and crane type rails. Steel rails weighing 38
kilograms or more per meter are called heavy-duty rails; The 43kg
steel rail is a secondary heavy rail.
| U71Mn | Mechanical Property | Chemical Composition |
| Yield strength | Tensile strength | Elongation | Hardness | C | Si | Mn | S | P | Cr | Ni | Cu |
| MPa | kg/mm² | MPa | kg/mm² | min | HB | ≤ | ≤ | ≤ | ≤ | ≤ |
| | ≥880 | | 9% | | 0.65-0.76 | 0.15-0.35 | 1.10-1.40 | 0.03 | 0.03 | 0.25 | | |
Other Features
The main materials of 43kg heavy-duty steel rails include 50Mn and
U71Mn. These materials have good mechanical properties and wear
resistance, which can meet the needs of railway operation.
43kg heavy-duty steel rails are widely used for laying railway
mainlines, dedicated lines, bends, and tunnels. Although it is
referred to as a "heavy-duty" rail, in modern high-speed and
heavy-duty railways, rails with weights of 50kg/m, 60kg/m, or even
heavier are more commonly used. However, in some specific
situations, such as routes with moderate speed and capacity, 43kg
heavy-duty steel rails are still an economical and practical
choice.
FAQ
Q:What are the specifications of your rails?
A:We provide rails of various specifications, including standard
rails, heavy rails, light rails, etc., to meet the needs of
different railway construction and maintenance. Common
specifications include 43kg, 50kg, 60kg, etc.
Q:How is the quality of your rails guaranteed?
A:Our rails meet international quality standards and are ISO 9001
certified. All rails undergo strict quality inspections before
leaving the factory to ensure defect-free and high durability.
Q:What are the materials of the rails?
A:Our rails are made of high-quality steel, usually carbon steel or
alloy steel, to ensure their high strength, wear resistance and
fatigue resistance, and adapt to various climatic conditions.
Q:How many tons of weight can your rails bear?
A:Our rails are designed to carry heavy trains and can withstand
different weights according to different specifications and
designs. Generally speaking, standard railway rails can carry more
than 20 tons of weight.
